* Abdominoplasty (Tummy Tuck ( Abdominoplasty))
* Ablation Therapy for Arrhythmias
* Ablation, Endometrial (Endometrial Ablation)
* Ablation, Uterus (Endometrial Ablation)
* Abnormal Liver Enzymes (Liver Blood Tests)
* Abstinence Method of Birth Control (Natural Methods of Birth Control)
* Acupuncture
* Adenoidectomy (Tonsillectomy)
* Adenoidectomy Surgical Instructions
* Adenosine (Exercise Stress Test)
* Adenosine Stress Test For Heart Disease (Coronary Artery Disease Screening Tests (CAD))
* AFP Blood Test (Alpha-fetoprotein Blood Test)
* ALK (Keratoplasty Eye Surgery (ALK))
* Allergy, Skin Test (Skin Test For Allergy)
* Alpha-fetoprotein Blood Test
* ALT Test (Liver Blood Tests)
* Alternative Medicine
* AMA (Antimitochondrial Antibodies)
* Amino Acid, Homocysteine (Homocysteine)
* Amniocentesis
* Amniotic Fluid (Amniocentesis)
* ANA (Antinuclear Antibody)
* Analysis of Urine (Urinalysis)
* Angiogram Of Heart (Coronary Angiogram)
* Angioplasty (Coronary Angioplasty)
* Annulus Support (Heart Valve Disease Treatment)
* Anti-CCP (Citrulline Antibody)
* Anti-citrulline Antibody (Citrulline Antibody)
* Anti-cyclic Citrullinated Peptide Antibody (Citrulline Antibody)
* Anti-Reflux Surgery (Fundoplication)
* Antimicrosomal Antibody Test (Thyroid Peroxidase Test)
* Antimitochondrial Antibodies
* Antinuclear Antibody
* Antithyroid Microsomal Antibody Test (Thyroid Peroxidase Test)
* Antro-duodenal Motility Study
* Aortic Heart Valve Replacement (Heart Valve Disease Treatment)
* Apgar Score
* Appendectomy
* Arrhythmia Treatment (Ablation Therapy for Arrhythmias)
* Arthritis Physical and Occupational Therapy
* Arthrocentesis (Joint Aspiration)
* Arthroplasty (Joint Replacement Surgery Of The Hand)
* Arthroscopy
* Artificial Kidney (Hemodialysis)
* Aspiration, Joint (Joint Aspiration)
* AST Test (Liver Blood Tests)
* Astigmatic Keratotomy Eye Surgery
* Auditory Brainstem Response (Newborn Infant Hearing Screening)
* Augmentation, Lip (Lip Augmentation)
* Autopsy
